Fire-resisting curtain



"Oct. 4,1927. 4 ,6 6 I R. H. GREEGOR FIRE RESISTING CURTAIN I vFi'ledJan. 9, 1925 2 Sheets-Sheet l- E1291. 1O; Fig.2.

I mysu-ron RALPH H .GREEGQR Oct. 1927 R. H. GREEGQR' A FIRE RESISTINGCURTAIN Filed Jan. 9, 1923 2 sheets-sheet 2 INVENTOR RALPH HQ GR EEGORPatented Oct. 4, 1927.

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RALPH H. GREEGOR, F COLUMBUS, OHIO, ASSIGNOR TO THE KINNEARIv'IANUFACTUR- ING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

FIRE-RESISTING CURTAIN.

Application filed January 9, 1923. Serial No. 611,595.

This invention relates to the type of fire resisting rolling curtainthat can be raised and lowered at will and also automatically releasedfor closing by gravity upon an a undue rise of temperature such asoccasioned by near-by fire.

The object of the invention is to provide improved means for raising andlowering the curtain, such means including thermally 10 released meansin very simple form whereby the thermally released means is constantlyexposed for action in case of fire.

The invention is embodied in the example herein shown and described, thefeatures of novelty being finally claimed.

In the accompanying drawings Figure l is a view in front elevation of acurtain equipped with the invention.

Fig. 2 is a vertical sectional view on the line II-II Fig. 1.

Fig. 3 is a horizontal section on a larger scale on the line IIIIII Fig.1.

Fig. 4 is an interior view of the left hand end of Fig. 3.

Fig. 5 is avertical section on the line V-V Fig. 3 on a larger scale ofthe housing at the top of the opening showing a modification.

Fig. 6 is a vertical sectional View of the cable winding device on alarger scale.

In the views 7 designates the curtain which is constructed of slatstraveling at its vertical edges in channels 8 and attached at its upperend to a suitable winding roller 9 journaled in suitable bearings in theupper part of the opening to be closed. Attached to the middle of thebottom bar 10 of the curtain is a cable 11 that extends upward acrossthe front or exposed side of the curtain, around pulleys 12, 13 and 14;and thence downward at the side of the window frame in interior of thebuilding to a suitable drum at 15 for winding and unwinding the cable.The cable is provided with a fusible link 16 where it is hooked to thebottom bar of the curtain so that when said link is fused the connectionof the cable with the bar is severed. here the cable emerges into theinterior of the building it can be enclosed in a tube 21 terminating ina hood 21 that also lncloses the pulley 14 at the point of emergence.The cable winding'drum includes a cable receiving'portion l7 and towhich the cable is attached and ratchet portion 18 in a suitable housingthe drum and ratchet being operated by means ofa suitable crank 19. Alatch or dog 20 engages the ratchet portion 18 for holding the drum inthe position to which turned. The curtain is raised only to a positionwhere the fusible link is left exposed and the curtain is held in thatposition by the dog 20 engaged with a tooth of the cable winding drum.The curtain can be, for testing purposes or otherwise, lowered by theaction of gravity by simply releasing the dog 20 or the curtain willauto matically close from the raised position upon the melting of thefusible link 16 which action releases the curtain sustaining cable andpermits the action of gravity on the curtain to lower it. 1

While Ihave shown the curtain as installed in connection with a windowopening, obviously it can be used in connection with an opening of othername where my invention would be useful.

The forms of the parts can be changed without departing from the gist ofthe invention as claimed.

What I claim is: 1

1. In combination with a. rolling fire resisting curtain for a building,a curtain operating cable attached to the lower portion of the curtainand extended over the front thereof, said cable containing thermallycontrolled means for releasing its connection with the curtain in caseof fire, and means whereby said cable may be secured to hold the curtainin raised position.

2. In combination with a rolling fire resisting curtain for a building,a curtain operating cable attached to the lower portion of the curtainand extended over the front thereof to the interior of the building,said cable containing thermally controlled 95 means near its point ofattachment with the curtain for releasing its connection with thecurtain in case of fire, means for operating said cable to raise andlower it, and means whereby said cable may be secured to hold thecurtain in raised position.

3. In combination with a rolling fire resisting curtain, an operatingcable attached to the lower portion of the curtain and we tended upwardacross the face of the-same and thence to a point of attachment Withinreach of an operator, said cable containing a fusible member near itspoint of attachment 10 With the curtain whereby in case of fire thecable may be released to permit the closing of the opening in Which thecurtain is installed.

RALPH I-I. GBEEGOR.

